Improvement in traversing cams for card-stripping mechanisms



6 Sheets--Sheet1.

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.ipping-Mechan Patented July 8,1873.

fwmiar OSBORNE? PRucEssQ AM. PHOTO-LITHOGRAPHIC co. u.(

6 Sheets--Sheet2.

G. E. TAFT. Traversing Cams for Bard Stripping-Mechanisms. N0.

Patented July 8,1873.

AM. PHOTO-LITHOGRAFHIC c0. MX(0sBOR MEI9 macsss) G. E. TAFT.

6 Sheets--Sheet 3.

Traversing G'ams' for Card Stripping-Mechanisms.

AM PHOTD-L (THOGRAPHIG co. /v. lesson/151s PRocEss) Patented July8,1873.

6 Sheets--Sheet 4. G. E. TAFT.

Trgversingfiams for Card Stripping-Mechanisms. N0.1 40,740.PatentedJuly8,1873.

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G. E. TAFT. M 'Traversing Cams for Card Stripping-Mechanisms.

Patented July 8,1873.

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6Sheets--Sheet6. G. E. TAFT. I Traversing Cams for GardStripping-Mechanisms.

All-140,740. "Patentedjuly 8,1873.

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TTNITED FFIGE.

GUSTAVUS E. TAFT, OF WHITINSVILLE, MASSACHUSETTS, ASSIGNOR TO THE WHlTINMACHINE WORKS, OF SAME PLACE.

IMPROVEMENT lN TRAVERSING CAMS FOR CARD-STRIPPING MECHANISMS.

Specification forming part of Letters Patent No. 140,740, dated July 8,1873; application filed March 29, 1873.

a rack with stouter pins, and a cam suited to it, has been adopted. Thisrack and cam are the patented inventions of John F. Foss, of I Lowell;but the cam does not revolve in both directions, which it is sometimesdesirable to have it do in repairing or starting up new cards, thoughthe turning in one direction is all that is needed when the card is atwork carding cotton. To make a cam, adapted to the Foss rack, that willwork in both directions, is the object of my present invention.

Figure 1 is a full-size view of a Foss cam, going in a forwarddirection, in two positions on a section of a rack. Fig. 2 is afull-size View of my improved cam on a section of a rack going in aforward direction. Fig. 3 is a full-size end view of rack-section, cam,and part of cam-shaft. Fig. 4: is a full-size view of my improved cam ona section of a rack in a different position from the one shown in Fig.2, but still going forward. Fig. 5 is a fullsize end view of cam, with aportion of carnshaft. Fig. 6 is a full-size view of my improved cam on asection of a rack backing instead of going forward. Fig. 7 is afullsized view of my improved cam still backing, but in a differentposition from that shown in Fig. 6. Fig. 8 is a transverse section of arack, showing one of the pins. Fig. 9 is a reduced view of a whole rack,as used for eighteen top flats.

A is the web of the rack, the rack being secured to the card-arch in theusual way at b b. F is the cam. G is the guiding-channel or groove forthe end 01 of the cam-shaft to work in. 1 2 3 4 5 6 7 8 9 10 are therack- .pins by which and the revolving cam the stripper-frame is made tomove forward and.

backward. j are the raised surfaces or guiding-flanges on the cam F,which, by their action on the pins 1 2 3, &c., carry the strippingframeback and forth, as I will now explain by reference to the drawings. F,Fig. 1, shows the Foss cam at the end of the rack as it is about to passaround to the under side of the arched rack. It will be seen that theaxis of the cam-shaft and the center of a pin are so near together thatthe recess 9 must be in the hub of the cam to allow it to pass around,and so, also, whenever the guiding-channel G carries the cam-shaftnearest to the pins. F shows another position of the cam on the samesection of a rack, the cam-flanges f catching onto pin 9 and leaving pin8. Now it will be seen that this Foss cam can only go in one direction,because there is no recess like 9 to allow the axis of the cam-shaft andthe center of a pin to approach near enough; and if only a similarrecess to g was made on the other side for the purpose of backing, thestripper would not work properly, because, when going forward, a pin isliable, in certain positions and conditions of the frame, to drop intothat other recess like g, and the cam turn part of a revolution on it,thus breaking up the spacing or regularity of traverse in thestripping-frame, which is requisite for skipping and stripping the topflats. Fig. 2 shows my improved cam. The part h is extended far enoughfrom the axis of the cam to enable it to catch onto a pin, 3, so as toprevent the cam from'moving toward pin 2, as the backing recess 9 mightotherwise allow it to do. Fig. 3 is an elevation, showing the cam-shaftD, the thickness of the rack and the cam. Fig. 4 is another View of mycam, in its forward or stripping movement;

and Fig. 5 is a view of the cam detached, and sectional view ofcam-shaft. Fig. 6 shows how, in backing, my cam, the part m, causes thepin 2 to be received into the recess g and to turn upon it until thepart h of the cam strikes pin 3, as shown in Fig. 7, when it catchesupon it, and the cam is drawn toward pin 3 until the part m is clear ofthe pin 2, shown in contact with it, so that the cam can.

pass clear of it. Fig. 8 is a transverse sec- 9 and parts on and h, andbeing otherwise tion of the rack to show more clearly the constructed,as shown and described, so as to guide-channelG for the end of thecam-shaft; enable it to have a forward and backward also, one of thepins, shaded. Fig. 9 shows motion, essentially as herein specified.

a rack with ten pins as adapted for eighteen GUSTAVUS E. TAFT. topflats. Witnesses:

What I claim as my invention is- DAVID B. CHASE,

The stripper-cam provided with the recess HENRY B. OSGOOD.

